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Message: [QUOTE="great450, post: 447201, member: 8099"] [b]elite diesel vs steed speed facts.[/b] :nopics: Hi I am Greg or (great450) the truck that they are talking about is mine. The reason I am doing the work is for longevity and fuel mileage. The truck has 4:30 gears and four wheel drive and getting 8 to 9 miles to the gal. This truck nevers sees rain or snow its a garage queen. So lets talk facts about it. First, I installed a Sinister EGR delete with a new horn boy that was fun, the job was done with the cab on. Second, I removed DPF & CAT I left the stock muffler on so it sounds a little better then stock. Third, I removed the stock air box and replaced it with AFE cold air intake. Real nice! Forth,I finally installed the brain, HS Performance MINI MAX. I was schooled by SPEED HOUSE PERFORMANCE, the salesman was CHAD, he was a blessing to deal with and a great help. Chad help me thru all questions that I had. At this point all work was done and I tested the truck. PS just as a point of fact I drove Pro-Mod 1/4 mile cars for 10 years and was racing for over 25 years. So back to me truck I noticed that the engine spooled up faster and power was great the EGT where lower by about 75 degrees and the amount of pedal was far less to depress to get that truck rolling. Fifth,I then spoke to Chad and ordered an AFE Intercooler. After installing it I then noticed my EGT's lower even more, about 125 degerees. At this point I was getting 16 to 20 mpg depending on the road. But a still wanted more for my truck I spoke to a friend thats works at FORD he said that the exhaust manifolds where a weak link with also the up pipes. That bring's me to Leen from Steed Speed I spoke with Leen for some time and the got recommened to Tadd from Elite Diesel. I spoke to a salesman (no name) gave me info (not so good) so I bought the manifolds & uppipes. I then removed the cab from the chassis it was easy! While waiting for the uppipes and manifolds. When I got the manifolds they where Perfect just what I expected cnc made, great fit!! I went to install the uppipes well...... lets move on, after fitting the up pipes and getting them to fit and testing the truck I retuned the programer to lock up in forth and fifth gear I lost about 1.5 to 2 mpg but the truck spooned up faster. It was hard to keep the fuel peddle steady because it was hardly used. I went back to the shop and went and checked everything and took forth gear lock-up off I got better fuel mileage 17 to 21 mpg depending on the road spool up time was great no turbo lag at all. I have only great things to say for Steed Speed manifolds and they made my truck come from a dog something thats fun to drive. I also have a ZO6 2011 KNOW FUN. I will help anyone with questions on the job that I did. I never that posting before so please give me some slack. greg (great450) [/QUOTE]